This paper explores the degradation of a model pollutant, 2-(4-thiazolyl) benzimidazole by electrochemical process. The degradation of the real Agricola effluent is followed by COD abatement and UV spectroscopy. The electrochemical oxidation of fungicide thiabendazole has been studied on boron doped diamond (BDD) electrodes on acid medium by bulk electrolysis. The influence of several operating parameters, such as applied current density, effect of electrolytes (NaCl), effect of concentration and effect of temperature was investigated. UV spectroscopy and chemical oxygen demand measurements were conducted to study the reaction kinetics of thiabendazole mineralization. The results showed that the rate of the electrooxidation increases with increasing current density and decreasing NaCl. The overall results indicated that BDD electrode exhibited the best performance.